/**
 * @param {string} path
 * @returns {Boolean}
 */
export function isExternal(path) {
  return /^(https?:|mailto:|tel:)/.test(path)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validUsername(str) {
  const valid_map = ['admin', 'editor']
  return valid_map.indexOf(str.trim()) >= 0
}

/**
 * @param {string} url
 * @returns {Boolean}
 */
export function validURL(url) {
  const reg = /^(https?|ftp):\/\/([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%$-]+)*@)*((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}|([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(:[0-9]+)*(\/($|[a-zA-Z0-9.,?'\\+&%$#=~_-]+))*$/
  return reg.test(url)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validLowerCase(str) {
  const reg = /^[a-z]+$/
  return reg.test(str)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validUpperCase(str) {
  const reg = /^[A-Z]+$/
  return reg.test(str)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validAlphabets(str) {
  const reg = /^[A-Za-z]+$/
  return reg.test(str)
}

/**
 * @param {string} email
 * @returns {Boolean}
 */
export function validEmail(email) {
  const reg = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
  return reg.test(email)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function isString(str) {
  if (typeof str === 'string' || str instanceof String) {
    return true
  }
  return false
}

/**
 * @param {Array} arg
 * @returns {Boolean}
 */
export function isArray(arg) {
  if (typeof Array.isArray === 'undefined') {
    return Object.prototype.toString.call(arg) === '[object Array]'
  }
  return Array.isArray(arg)
}

/**
 * @param {string} value
 * @returns {Boolean}
 */
export function validPassword(value) {
  const hasUpperCase = /[A-Z]/.test(value);
  const hasLowerCase = /[a-z]/.test(value);
  const hasNumber = /\d/.test(value);
  const hasSpecialChar = /[~!@#$%^&*.]/.test(value);

  const illegalChars = value.match(/[^\da-zA-Z~!@#$%^&*.]/g);
  if (illegalChars) {
    // 去重并格式化非法字符
    const uniqueIllegalChars = [...new Set(illegalChars)]
      .map(c => `"${c}"`)
      .join('、');

    return {
      isValid: false,
      messages:
        `包含不允许的字符：${uniqueIllegalChars}` + `，允许的符号仅为：~!@#$%^&*.`

    };
  }

  const metConditions = [
    hasUpperCase,
    hasLowerCase,
    hasNumber,
    hasSpecialChar
  ].filter(Boolean).length;

  if (metConditions < 3) {
    const missingRequirements = [];
    if (!hasUpperCase) missingRequirements.push("大写字母");
    if (!hasLowerCase) missingRequirements.push("小写字母");
    if (!hasNumber) missingRequirements.push("数字");
    if (!hasSpecialChar) missingRequirements.push("特殊字符");

    return {
      isValid: false,
      messages: `密码需要包含以下至少3种字符类型：${missingRequirements.join("、")}`
    };
  }


  //  所有检查通过
  return {
    isValid: true
  };
}
